HESI biology for Lpn ACTUAL EXAM ACTUAL TEST QUESTIONS & ANSWERS 2024 ( A+ GRADED 100% VERIFIED)

HESI biology for Lpn ACTUAL EXAM ACTUAL TEST QUESTIONS & ANSWERS 2024 ( A+ GRADED 100% VERIFIED) in biology there is a hierarchic organizational system for nomenclature. what is it? (7) - ANSWER- kingdom, phylum, class, order, family, genus, species fatty acids - ANSWER- vary greatly but simply are grouped into two categories: saturated and unsaturated. phospholipids - ANSWER- consist of two fatty acids of varying length bonded to a phosphate group. lipids better known as what - ANSWER- fats. but specifically fatty acids, phospholipids, and steroids. steroids - ANSWER- they are a component of membranes, but more important, many are precursors to significant hormones and drugs amino acids - ANSWER- proteins are the most significant contributor to cellular function. they are polymers of 20 molecules called amino acids. deoxyribonucleic (DNA) - ANSWER- is a unique molecule specific to a particular organism and contains the code that is necessary for replication. ribonucleic acid (RNA) - ANSWER- is used in transfer of information from DNA to protein level and as a messenger in most species of the genetic code metabolic pathways - ANSWER- in a cell, reactions take place in a series of steps called metabolic pathways, progressing from a standpoint of high energy to low energy organelles - ANSWER- cells consist of many components most of which are referred to as organelles chromosomes - ANSWER- the first organelles is the nucleus, which contains the DNA of the cell in organized masses called chromosomes endoplasmic reticulum - ANSWER- is a membranous organelle found attached to the nuclear membrane and consists of two continuous parts. rough ER - ANSWER- ribosomes is one section. it is responsible for protein synthesis and membrane production smooth ER - ANSWER- other section of er lacks ribosomes and is referred to as smooth er. it functions in the detoxification and metabolism of multiple molecules. Golgi apparatus - ANSWER- inside the cell is a packaging, processing, and shipping organelle called Golgi apparatus. this transports proteins from the ER throughout the cell phagocytosis - ANSWER- uptake food through the cell membrane, creating a food vacuole. vacuole - ANSWER- is a membrane- enclosed structure that has various functions, depending on cell type